Abstract
‘Russet Burbank’ potatoes (Solarium tuberosum L.) were subjected to various levels of water application during the growing season. Water applied, rainfall, and soil water changes were measured at weekly intervals. Tuber yield and quality increased as water consumption increased from 300 mm to 650 mm. Evapotranspiration (ET) increased rapidly from plant emergence until early tuber bulking and declined gradually as plants matured. Comparing ET with pan evaporation provided coefficients (K) which changed in response to crop growth stages. K increased from 0.3 at emergence to over 0.8 during maximum leaf area and declined with crop maturity. The relationship between K and crop growth stage can be used with confidence in scheduling irrigation of potatoes in north central Oregon.
Resumen
Papas (Solarium tuberosum L.) de la variedad “Russet Burbank” fueron sometidas a varios niveles de aplicación de agua durante la temporada de cultivo. La cantidad de agua aplicada, la lluvia y el contenido de agua del suelo fueron medidos a intervalos semanales. El rendimiento y la calidad de los tubérculos incrementó a medida que el consumo de agua aumentó de 300 mm a 650 mm. La evapotranspiración (ET) aumentó rápidamente desde la emergencia hasta el “llenado” temprano do los tubérculos y declinó gradualmente a medida que maduraban las plantas. Comparaciones de ET con valores del tanque de corporación suministraron coeficientes (K) que variaron de acuerdo a las fases de crecimiento de cultivo. K aumentó de 0.3 en la emergencia a más de 0.8 al momento de máxima área foliar y declinó con la madurez del cultivo. La relación entre K y la etapa de desarrollo del cultivo puede ser usado con confianza al programar la irrigación de la papa en el norte y centro de Oregon.
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Technical Paper No. 7024, Oregon State University Agricultural Experiment Station.
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Hane, D.C., Pumphrey, F.V. Yield-evapotranspiration relationships and seasonal crop coefficients for frequently irrigated potatoes. American Potato Journal 61, 661–668 (1984). https://doi.org/10.1007/BF02852929
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DOI: https://doi.org/10.1007/BF02852929